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(KMOV.com) – A woman serving time in prison for the attempted drowning of her child has been accused of killing another.

Elyse J. Mamino has been charged with one count of first degree murder and one count of concealment of a homicidal death.

While police were investigating Mamino for a 2008 incident where she attempted to drown her child, they said they discovered the remains of another baby at her home in Belleville. Authorities said Mamino gave birth to a different child in Sept 2007 and then wrapped the infant in a towel before placing him a plastic bag causing him to suffocate.